@font-face {
    font-family: 'iconfont';
    src: url('//at.alicdn.com/t/font_2680005_2v81j5og00f.woff2?t=1626424842361') format('woff2'),
    url('//at.alicdn.com/t/font_2680005_2v81j5og00f.woff?t=1626424842361') format('woff'),
    url('//at.alicdn.com/t/font_2680005_2v81j5og00f.ttf?t=1626424842361') format('truetype');
}
body{
    margin: 0;
    padding: 0;
}
*{
    box-sizing: border-box;
}
.myhead{
    background-color: pink;
    text-align: center;
    padding: 5px 0px 10px 0px;
    color: #000;
}
table{
    margin: 0 auto;
}
#things{
    width: 180px;
    height: 30px;
    border-radius: 3px;
    outline: none;
    border: solid 1px white;
}
#add{
    display: inline-block;
    width: 80px;
    height: 30px;
background-color: rgb(233, 76, 121);
color: black;
border-radius: 3px;
line-height: 30px;
}
#add:hover{
    cursor: pointer;
    background-color: rgb(243, 4, 96);
    color:black;
}
ul{
    margin: 0;
    padding: 0;
}
ul li{
    list-style: none;
    position: relative;
    padding-left: 40px;
    height: 40px;
    line-height: 40px;
}
ui li:nth-child(odd){
    background-color: #f9f9f9;
}
ul li:hover{
    cursor: pointer;
    background-color: #dddddd;
}
ul li.check{
    background-color: #888888;
    text-decoration: line-through;
    color: #f9f9f9;
}
ul li.check::before{
    content: '';
    position: absolute;
    border-color: #fff;
    border-style: solid;
    border-width: 0 2px 2px 0;
    top: 10px;
    left: 16px;
    transform: rotate(45dge);
height: 15px;
width: 7px;
}
.close{
    position: absolute;
    right: 0px;
    top: 0px;
    padding: 0px 2px;
    font-size: 16px;
}
.close:hover{
    background-color: #f44336;
    color: white;
}